Heavy nailer joist



uw Ti, W9 G. G. @mmm-n HEAVY NAILER JUIST Filed Dec. 29, 1937 Patented Aug. 1, 1939 UNITED STATES PATENT OFFICE Application December 29, 1937, Serial No.-182,353

(c1. iss- 40) 1 Claim.

This invention relates to a structural member for building use, and particularly to heavy weight nailer joists or studs.

An object of this invention is to provid-e a structural member which will exert a continuous pressure on the sides of a nailer strip.

Another object of the present invention is to provide an I-shaped structural member having at least one enlarged head portion to receive a nailer strip so that, upon welding of the portions forming the web, there is a spring-like pressure exerted on the top and sides of'the nailer strip to hold it rigidly within the enlarged head portion.

Other objects and advantages will become apparent as the description proceeds, in which:

Figure 1 is a perspective of one form of the present invention;

Figure 2 is a detailed perspective of a modified form of the bottom fian'ge portion shown in Figure 1; and

Figure 3 is a perspective of another form of the invention.

In the drawing, the I-shaped structural member is formed, as shown in Figure 1, by passing a sheet of relatively heavy gauge metal through a conventional type cold forming mill so as to provide a web-portion 2 yhaving a double thickness of material, inner flange portions 3 extending outwardly from said web-portion and superimposing an outer fiange member 4. The free ends of the web thickness are bent outwardly, as shown at 5, to form the inner portion of the upper flange, then upwardly, as shown at 6, and terminate angularly inwardly, as shown at 'I. Such a construction provides, at one end of the web-portion, an enlarged head portion within which is positioned a nailer strip 8.

The nailer strip 8 may be wood or cementitious material and has the top outside corners beveled, as shown at 9. This nailer strip, which is inserted between the two sides 6, rests upon the upper flange portion 5' and, being slightly wider than the internal dimensions of the enlarged head portion, producesva spring-like tension upon said nailer strip when the web thicknesses are brought together and welded, as shown at I0. The inwardly directed portions l engage the beveled corner portions 9 of thenailer strip and exert a wedge-like action on said strip, forcing the same downward into intimate contact with the flange portions 5 while, at the same time, the side members 6 exert an inward pressure upon said nailer strip, thereby holding said nailer strip securely :ln position whether it shrinks or swells.

The bottom flange of said structural member may be secured to the plasterboard or ceiling, indicated at I2, by means of a wire clip I4 ernbedded therein and has its free ends bent upwardly and over the inner flange portions 3.

If desired, the bottom flange portion may be formed, as shown in Figure 2, to receive a nailer strip I5 of trapezoidal shape. The inner flange portions 3 may be bent outwardly and inclined downwardly and outwardly as shown, with the bottom portion 4 of said flange provided with a plurality lof apertures or a slot I6, as may be desired, to permit introduction of nails or screws into said nailer strip whereby the ceiling member I2 is secured to said structural member.

In the form shown in Figure 3, the structural member comprises symmetrically shaped complementa] members II and I8. welded together at the top and bottom portion of the web, as shown at I9 and 20, and having a continuous opening 2l in the bottom ange portion 4. The upper fiange portion forming the enlarged head portion is formed similarly to that shown and described in Figure 1, while the lower ange portion is formed similarly to that shown and described relative to Figure 2.

While I have shown and described specic ern-- bodiments of the present invention it will be understood that I do not wish to be limited exactly thereto, since various modications may be made f' without departing from the scope of the invention, as dened by the following claim.

I claim:

A nailer joist or stud comprising a web portion having a double thickness of material contacting each other and welded together, flanges extending from said web portion, the anges at one end of said web portion bent outwardly from the vertical plane of said web and upwardly and angularly inward to provide an enlarged head portion, the iianges at the other end of the web extending outwardly from their vertical plane to form inner iiange members and backwardly to form an outer ange member so that said ange members are in spaced superimposed relation to each other, and av nailer strip positioned within said enlarged head portion, said nailer strip provided with beveled corner portions, said angular inward portions of said enlarged head adapted to contact the beveled portions of said nailer strip so as to exert a wedge-like action on said nailer strip to hold the samey securely in position with l' said enlarged head portion.

GERALD G. GREULICH. 

